Transcript

The world waking up to more fallout from a global cyber attack on Monday (May 15).

Governments and businesses in Asia reporting some disruptions from the WannaCry ransomware worm, as experts warn of a wider impact to come as employees power up computers and check e-mails.

The worm's locked up hundreds of thousands of computers in more than 150 countries.

Experts say its waiting in emails left unopened over the weekend, like cyber "landmines."

Already by noon payment systems at China's energy giant Petro China were affected, and state media puts 200,000 computers affected around the country.

Two major Indonesian hospitals reported they'd been hit.

There were also reports from South Korea and Australia.

Experts fear the attackers behind WannaCry or copycats may develop new versions of the worm.

The Hong Kong-based cyber security firm Network Box told Reuters their team had a variant of the ransomware that didn't used email to lure victims.

Network Box also said several major companies in Asia had been hit by the worm, but would likely not publicly admit infection.

On Sunday Microsoft seemed to acknowledge what researchers already guessed: the worm used a hacking tool built by America's NSA that leaked online in April.

Infected computers seem to be mostly out-of-date devices that groups didn't think were worth the price of upgrading, which meant they missed an update from Microsoft that fixed the security gap the worm uses to infect devices.